Respiratory mask



FIG. 1 is a perspective view, showing the new design for a respiratory mask;

FIG. 2 is a front view thereof;

FIG. 3 is a right side view thereof, the left side view being a mirror image;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a rear view thereof.

The broken line showing of a mask is included for the purpose of illustrating environment and forms no part of the claimed design.

The shading is provided to illustrate contour only and is not an indication of surface texture or sheen. 

CLAIM The ornamental design for a respiratory mask, as shown and described. 